Four Hard ‘Core’ Training Circuits For Six-Pack Abs

Your abs are a stabilizer muscle built for endurance, so it only makes sense to train them that way. In this article I’ll provide an overview of how I prefer to train the core in all types of clients, from beginners to advanced fitness competitors, by detailing the style of training, sets and reps, frequency, favorite exercises, rep cadence and highlight my personal favorite training technique — the abs circuit or giant set.

Some of the most impressive cores I’ve helped to sculpt have been built with a circuit style of training or what I like to call “giant sets” (a giant set is a group of four or more exercises performed back-to-back in sequence without rest between movements). The key benefit here is that the abs are given very little time to rest and recover so the net stimulus and time under tension on the muscle is significantly enhanced per workout time. When you tailor your training to the structure and function of a muscle, results tend to come much quicker.

Here is a summary of my take on the different training variables when it comes to abdominal training. Once you get this down, planning your own circuit becomes easy.

Sets And Reps

When doing a circuit, I prefer to call one rotation of all exercises one “round”. You would do 3 to 5 rounds per workout and 15 to 50 reps per exercise. For static holds, do a minimum of 30 seconds and no more than 90 seconds to keep things moving along and the intensity up. Training abs with heavier weights and lower reps can lead to a thickening of the waist — never really a good look for any level of fitness.

Rep Cadence

For hypertrophy of the rectus abdominis or “six-pack” look, I’ve always preferred, “explosive with control” and a strong mind-muscle activation engaged throughout (1 second up, 1 to 2 seconds down). I think this is best for stimulating any type of hypertrophy of the abs. I’ll typically have clients slow things down when doing the core tightening workouts and use a more controlled pace (2 seconds up, 1 second contracted position, 2 to 4 seconds down).

Exercises

When planning your workouts, you should make a decision regarding your goals — is it more important for you to see your six-pack muscles or are you more concerned with having a tight, slim waist? If you chose the six-pack, then you would do more challenging crunching movements and if you chose the tight core goal then you would emphasize those workouts more frequently (samples provided below). I’ve provided some of my favourite six-pack exercises and core tightening exercises below. Take some time to learn the proper technique for each of these exercises before going into your ab circuit.

Favorite Core Tightening Ab Exercises:

Frequency

I really don’t believe the abs need to be or should be trained every day. Twice per week is plenty if you are doing it right (technique) and with enough intensity (effort). Workouts should take 20 to 30 minutes and be trained with the same level of effort you would give on a challenging leg day.

The Workouts

Now let’s get into the actual workouts! The ideal ab workout for me would be 4 to 5 different exercises that stimulate various parts of the core through different angles and movement patterns, performed in a circuit with no rest between each exercise and 2-minute rest periods after the circuit. One way to structure the circuit is to move from lower, upper, transverse, overall and isometric hold. Not sure what I mean? I’ve provided some examples below of a beginner and more advanced ab training circuit you can try out.

Sample Beginner Core Tightening Ab Circuit

Three rounds of 12 to 15 reps per exercise 30 seconds max between exercises, 4 minutes between rounds.

Plank – 45 seconds

Ab wheel rollouts from knees

Broomstick twist – 15 reps to each side

Vacuum – 12 reps, holding each 5 seconds each.

Sample Advanced Core Tightening Ab Circuit

Five rounds of 15 to 25 reps per exercise 10 seconds max between exercises, 2 minutes between rounds.

L-sit hold w with kettlebells

Ab wheel rollouts from standing

Dragonfy ab exercise

Broomstick twist with 2 second vacuum on each rep

Plank with rotations to each side — 60 seconds

Sample Beginner Six-Pack Circuit

Three rounds of 12 to 15 reps per exercise 30 seconds max between exercises, 4 minutes between rounds

Lying leg raises on mat

Stability ball or bosu ball crunches

Toe touch crunches

Bicycle crunches — 45 seconds continuous

Sample Advanced Six-Pack Circuit

Five rounds of 15 to 25 reps per exercise 10 seconds max between exercises, 2 minutes between rounds.

Hanging leg raises with slings

Decline board crunches with med ball

Decline board straight leg raises

Weighted cable crunch

Hanging windshield washers — 10 each side

You’re now on your way to a tighter, more sculpted core with some of my best tips for training the abs. Remember that training abs won’t burn the fat that’s located around your stomach so you can give up on that dream. To reveal your abs, you’ll need to get your diet and cardio right, and then use these workouts to really make them pop and shrink that waistline to be the best it can be.